Kentucky wasn't the only Top 25 team to lose Thursday night. Four others — No. 10 Saint Louis, No. 20 Iowa, No. 21 Memphis and No. 22 Ohio State — also came up short. No. 7 Louisville was the lone Top 25 team to win.

Six weeks after Michael Qualls beat the Wildcats with a last-second dunk in OT, Clarke lifted the Razorbacks this time with a 3-pointer and four free throws in the extra period, including two with 36.7 seconds left for a 69-64 lead.

Free throws were the difference in the game, with Arkansas making all six attempts in overtime and going 16 for 16 overall. Kentucky was 12 of 22 from the line.

James Young's 3-pointer brought Kentucky (21-7, 11-4 SEC) within two, but Arkansas' Kikko Haydar made two more from the line with 17 seconds left for the final margin.

The surging Razorbacks (19-9, 8-7) have won four straight and six of seven.

Saint Louis (25-3, 12-1) had not lost since falling to Wichita State 70-65 on Dec. 1.

Indiana 93, (20) Iowa 86: In Bloomington, Ind., Will Sheehey scored 19 of his career-high 30 points in the first half and Stanford Robinson added a career-best 17 to lead the Hoosiers (16-12, 6-9 Big Ten) past the Hawkeyes (19-9, 8-7) in a game that was postponed last week.

Roy Devyn Marble had 20 points for the Hawkeyes.

Houston 77, (21) Memphis 68:Danuel House had 19 points and the host Cougars (14-14, 6-9 American Athletic Conference) closed with a 14-5 run to win their second straight game.

Penn State 65, (22) Ohio State 63: In State College, Pa., D.J. Newbill scored 23 points and Tim Frazier added 16 as the Nittany Lions (14-14, 5-10) swept the season series from the Buckeyes (22-7, 9-7).

Western Kentucky 51, Texas State 50: In San Marcos, George Fant scored 14 points, including the game-winning bucket, as the Hilltoppers (19-9, 11-4 Sun Belt) rallied to beat the Bobcats (8-20, 4-11).